Rotation transmission mechanism, bicycle with same and elastic deformable body used therein

Abstract

The invention provides a rotating transfer mechanism, a bicycle with the rotating transfer mechanism and an elastic deformation body used in the rotating transfer mechanism. The rotating transfer mechanism comprises an inner rotating member, and an outer rotating member arranged on the inner rotating member in a freely rotated mode, the inner rotating member comprises one or more outer periphery convex parts protruding towards the outer periphery side, the outer rotating member comprises one or more inner periphery convex parts, the outer periphery convex part is provided with the forward facein the forward rotating direction of the rotating transfer mechanism to rotate because of forwarding and offset form the center of the outer periphery convex part, an elastic deformation part is arranged between the forward face and the inner periphery convex part, and a space is formed in the middle local of the elastic deformation part. During opposite rotating of the inner rotating member andthe outer rotating member, and the elastic deformation part is elastically deformed by being clamped between the outer periphery convex part and the inner periphery convex part.

Description

technical field [0001] The present invention relates to a rotation transmission mechanism and an elastically deformable body used in the rotation transmission mechanism, and particularly to a rotation transmission mechanism used by being attached to a rotation shaft such as a crankshaft of a bicycle. Background technique [0002] In the case of a bicycle in which the wheel is rotated by the driver using manpower, once the bicycle starts to run, it can run with a small force. However, when starting to pedal the bicycle when starting, accelerating, climbing, etc., the driver will receive a particularly large reaction force from the bicycle, and part of the input energy will be fed back to the knees, ankles, waist, etc. as an impact, not only It produces a large load on the human body, and cannot effectively use the input energy, resulting in a reduction in propulsion. Moreover, when the bicycle starts suddenly, accelerates rapidly, climbs a steep slope, the weight of the driv...

AI Technical Summary

Problems solved by technology

[0011] (1) With regard to the bicycle disclosed in Patent Document 1, since the radius of rotation of the pedals is automatically extended in accordance with the resistance, there is a problem that the structure of the crank mechanism is complicated, the number of parts increases, and the stability of the operation is lacking. performance, assembly workability, mass production

Therefore, there is a problem that the elastic body is difficult to deform, and it is difficult to store energy, so it is difficult to efficiently convert the restoration of the elastic body into a rotational force, and the effective utilization of energy is lacking.

[0015] In addition, due to the large number of parts and the complex structure, mass production is lacking, and the gear body and the support body are integrated through the elastic body, so there are problems such as: it is difficult to replace the gear body or the elastic body, and maintenance is lacking. sex

However, since the torque is stored and supplemented by coil springs such as springs (leaf springs) or coil springs, there is a problem that it takes time until the coil spring is wound and the torque is accumulated. During this period, the pedal shaft is idling relative to the front gear and power cannot be transmitted, which significantly lacks usability

In addition, there are problems in that the spring body cannot be reliably compressed, the operation stability is lacking, the force accumulation (absorption of impact energy) at the top dead center and the recovery at the bottom dead center cannot be performed sufficiently, and the rotation efficiency and acceleration are not sufficient. Insufficient improvement of performance and uniformity of rotational torque

[0019] In addition, since the crank device must be installed at both ends of the gear shaft, there are problems such as: the number of parts increases, the overall complexity and size of the device are large, the spaceability and mass production are not enough, and the cranks at both ends have the following problems: Torsion occurs on the gear shaft due to the phase of the gear, and the energy storage of the input energy or the conversion of the stored energy to the rotational force cannot be efficiently carried out, and the durability, operation stability, and efficiency are lacking.

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